Thanks, I keep watch on this feature question,
if anyone has question on this feature,  let me know, and I could do verify for you.
 
Thanks
Kong Wei

>>> "Cathy Almond via RT" <dhcp-suggest@isc.org> 2012/11/22 20:10 >>>
Hi,

> On linux, dhcp4 doesn't support listen on alias address when
> its main interface has null ipaddr. dhcp3 support this function.
> Because dhcp4 scan interface from /proc/net/dev, this is not enough.
>
> On linux, both ioctl(,SIOCGIFCONF,) and
> getifaddrs() could retrieve all ipaddrs on the linux system.
...

Just letting you know that we opened a feature request ticket in our tracking
system with your posting to dhcp-workers.

You can communicate with us on this ticket by responding to this email and
keeping the subject line intact.

For future reference, you can submit bug reports directly by emailing them to
dhcp-bugs@isc.org and feature requests to dhcp-suggest@isc.org:
https://www.isc.org/software/dhcp/news

Thank you for this patch - I'm passing it to our engineering team for
evaluation/consideration.

Kind regards,

Cathy Almond
ISC Support

.